KR101972532B1 - Cold runner block system - Google Patents

Abstract

The present invention relates to a cold runner block system. According to one embodiment of the present invention, the cold runner block system comprises: a manifold unit including a gate to which a liquid thermosetting resin is injected, a flow path through which the liquid thermosetting resin injected through the gate flows, and upper and lower manifold blocks sharing the flow path; a nozzle unit including a nozzle body which is formed in a lower part of the manifold unit, discharges the liquid thermosetting resin flowing along the flow path through a tip part, and has a spiral cooling line therearound, a nozzle flange which is integrated with an upper part of the nozzle body and is connected to the lower manifold block, a nozzle housing which is formed at the outside to surround the nozzle body, a nozzle cover which is formed between the nozzle flange and the lower manifold block, and an elastic body which is formed between the nozzle cover and the nozzle flange, and elastically supports the nozzle body; and a cylinder unit formed on an upper part of the manifold unit, and including a cylinder in which a valve pin for discharging the liquid thermosetting resin toward a cavity of an injection mold is installed to be lifted.

Description

Cold Runner Block System {COLD RUNNER BLOCK SYSTEM}

The present invention relates to a cold runner block system. And more particularly, to a cold runner block system for injecting a liquid thermosetting resin into an injection mold to fill the cavity.

The Cold Runner Block System (CRB System) maintains the sprue and runner, which serve as the flow path, in order to fill the cavity of the injection mold with the liquid thermosetting resin, Is a concept opposite to a hot runner system in which a thermoplastic resin is injected into a cavity of an injection mold and filled.

That is, the hot runner system generally refers to a device for injecting a high temperature into the injection mold while maintaining the temperature of the thermoplastic resin at a high temperature when the molten thermoplastic resin is injected into the cavity of the injection mold.

On the other hand, the cold runner block system uses a thermosetting injection mold to maintain the temperature of the injection barrel at the room temperature of, for example, 4 to 20 ° C during the production of the product to the cavity, So that the molded article is solidified and taken out.

In this cold runner block system, for example, a flow channel through which a thermosetting resin injected through a nozzle locator flows is formed inside, and the thermosetting resin is uniformly distributed to the cavity side of the injection mold through the flow path A manifold block, a nozzle for discharging the thermosetting resin, a cylinder, and the like.

On the other hand, a general molding method of a thermosetting resin or a thermoplastic resin is, for example, compression molding (transfer molding) and compression molding (transfer molding).

In the compression molding, a material is supplied to an injection mold preliminarily heated by an electric furnace, the injection mold is closed, and the mold is cured by applying heat and pressure to compression molding the product. After the injection mold is opened to take out the molded product, And removing the burrs.

Transfer molding is a method of improving compression molding, which is mainly used for a thermosetting resin and an elastomer. The material heated and softened in a heating chamber is injected into a runner of a heated injection mold, the injection mold is closed, heat and pressure are applied The material inside the runner is filled in the cavity to be cured in the shape of the product, and the injection mold is opened to take out the scrap in the runner and the sprue together with the molded product, and then the scrap is removed.

Accordingly, compression molding and transfer molding are common. Therefore, a process of removing burrs or scrap removed together with a molded product is separately required. As a result, cycle time (cycle time) for injection molding of a molded product is increased . Also, there is a problem in that space and cost are wasted due to separately operating the process of removing burner scrap.

One of the factors causing the problems of compression molding and transfer molding is that the liquid thermosetting resin can not easily be injected into the injection mold through the cold runner block system to fill the cavity.

Korean Patent Publication No. 10-1392281

One aspect of the present invention is to provide a cold runner block system in which a liquid thermosetting resin can be easily injected into an injection mold and filled in a cavity of an injection mold.

One aspect of the present invention is to provide a cold runner block system capable of easily promoting a curing time as well as easily adjusting a balance by improving the structure in consideration of characteristics of a liquid thermosetting resin.

One aspect of the present invention is to provide a cold runner block system capable of preventing curing due to a rise in temperature through improvement in structure in consideration of low viscosity characteristics of a liquid thermosetting resin.

In order to achieve the above object,

A cold runner block system according to an embodiment of the present invention includes a gate through which a liquid thermosetting resin is injected, a flow channel through which a liquid thermosetting resin injected through the gate flows, A manifold unit including an upper manifold block and a lower manifold block;

A nozzle body disposed at a lower portion of the manifold unit and configured to discharge a liquid thermosetting resin flowing along a flow path through a tip portion and having a spiral cooling line around the nozzle body, A nozzle cover formed between the nozzle flange and the lower manifold block, and a nozzle cover disposed between the nozzle flange and the lower manifold block, A nozzle unit formed between the nozzle cover and the nozzle flange and including an elastic body for elastically supporting the nozzle body; And

A cylinder unit including a cylinder provided on an upper portion of the manifold unit and having a valve pin movably installed so as to discharge a liquid thermosetting resin to a cavity side of the injection mold;

. ≪ / RTI >

Further, in the cold runner block system according to an embodiment of the present invention, the manifold unit has an injection port formed therein for injecting a liquid thermosetting resin into the gate, and a lower end portion is screwed to the upper manifold block A Nozzle Locator; And

A Locate Ring configured on top of the nozzle locator;

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, the manifold unit includes a first O-ring formed between the upper manifold block and the lower manifold block and surrounding the flow path; And

A positioning pin (Lock pin) formed between the upper manifold block and the lower manifold block to determine an assembling position thereof;

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, the manifold unit further includes a pin guide bushing module (PIn Guide Bush Module) formed between the upper manifold block and the cylinder unit,

The pin guide bush module (PGB module) includes a pin guide for guiding the lifting and lowering of the valve pin;

A pin guide bush formed outside the pin guide;

A U-Cup bushing disposed at the lower portion of the pin guide and embedded in the upper manifold block;

A first backflow preventing ring (U-Cup Ring) formed on the bushing for preventing backflow and preventing backflow of the liquid thermosetting resin; And

A second backflow preventing ring formed at a lower portion of the backflow preventing bushing;

. ≪ / RTI >

Also, in the cold runner block system according to an embodiment of the present invention, the pin guide bushing module may include an anti-reverse o-ring installed between the upper manifold block and the back flow prevention bush,

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, a holding plate on which the manifold unit is formed and on which a nozzle unit is installed;

A dowel pin formed between the holding plate and the manifold unit to determine an assembling position of the manifold unit;

A clamping plate on which the manifold unit is disposed, the clamping plate having a cylinder unit; And

A space plate formed between the clamping plate and the holding plate;

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, a first heating plate formed at a lower portion of the holding plate and having a heater embedded therein;

An insulation plate formed between the holding plate and the first heating plate so as to block heat transfer of the first heating plate; And

A second heating plate formed on the injection mold so as to face the first heat insulating plate;

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, the nozzle unit may include a second O-ring formed between a lower end of the nozzle body and the nozzle housing so as to prevent leakage of cooling water, A fourth O-ring configured between the holding plate and the nozzle flange;

As shown in FIG.

In addition, in the cold runner block system according to an embodiment of the present invention, the helical cooling line may include a first cooling line formed at a lower end of a nozzle body and a first cooling line formed at an upper end of the nozzle body from an end of the first cooling line, And a second cooling line having a pitch relatively larger than that of the cooling line.

Further, in the cold runner block system according to an embodiment of the present invention, the elastic body may be formed of a disc spring.

Further, in the cold runner block system according to an embodiment of the present invention, the cylinder unit may include a cylinder cover disposed at an upper portion of the cylinder; And

A stroke limiter provided at the center of the cylinder cover for controlling the stroke of the cylinder;

As shown in FIG.

Further, in the cold runner block system according to an embodiment of the present invention, the stroke limiter may be rotated by 1/4 turn to adjust the stroke.

Further, in the cold runner block system according to an embodiment of the present invention, the cylinder cover may have a scoring line for indicating the position of the stroke limiter on the surface.

These solutions will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may appropriately define the concept of a term in order to best describe its invention The present invention should be construed in accordance with the spirit and scope of the present invention.

According to an embodiment of the present invention, cleaning and cleaning are easy through the improvement of the structure of the manifold unit, which is effective not only in maintenance but also in the leakage of the liquid thermosetting resin.

According to an embodiment of the present invention, there is an effect that the backflow of the liquid thermoplastic resin can be prevented through the pin guide module which is easy to disassemble and assemble.

Therefore, according to the embodiment of the present invention, since the liquid thermosetting resin can be easily injected into the injection mold through the cold runner block system and filled in the cavity of the injection mold, the occurrence of burrs and scrap can be prevented in the injection molding process Which can effectively improve the productivity of injection molding.

According to an embodiment of the present invention, it is possible to prevent the tip portion from being damaged by improving the structure of the nozzle unit, and also to prevent a gap between the injection mold and the injection mold due to the seal sealing.

According to an embodiment of the present invention, the spiral cooling line of the nozzle unit is constituted by the first and second cooling lines having different pitches, so that the cooling efficiency can be increased.

In addition, according to an embodiment of the present invention, the balance of a sequence or the like can be controlled during the progress of injection by improving the structure of the cylinder unit, so that accurate operation of the cylinder can be achieved.

Therefore, according to the embodiment of the present invention, not only the productivity of the injection molding can be improved through the improvement of the cold runner block system, but the reliability can be improved effectively by, for example, extending the replacement period of parts and the like.

1 is a perspective view of a cold runner block system according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a manifold unit of a cold runner block system according to an embodiment of the present invention. FIG.
3 is a cross-sectional view illustrating a pin guide bushing module of a cold runner block system according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a cold runner block system according to an embodiment of the present invention.
5 is a perspective view illustrating a cold runner block system according to an embodiment of the present invention.
6 is a sectional view showing a nozzle unit of a cold runner block system according to an embodiment of the present invention.
7 is an enlarged sectional view of the main part of Fig. 6;
8 is a sectional view showing a cylinder unit of a cold runner block system according to an embodiment of the present invention;
Fig. 9 is a plan view showing the top view of Fig. 8; Fig.

The specific aspects, specific technical features of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings. Note that, in the drawings, like reference numerals denote like elements throughout the drawings, unless otherwise indicated. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, the cold runner block system according to an embodiment of the present invention is connected to, for example, an external injection nozzle through a locating ring 11 and a nozzle locator 10, whereby a liquid thermosetting resin And a manifold unit 4 for distributing the liquid through the flow path 22, which is a kind of passage through which the liquid thermosetting resin flows.

That is, the manifold unit 4 is connected to the injection port 10a formed in the nozzle locator 10 through the gate 20a formed on the upper part thereof, thereby injecting the liquid thermosetting resin, and the flow path 22 ). ≪ / RTI >

For example, the liquid thermosetting resin supplied through the injector nozzle is injected into the gate 20a of the manifold unit 4 through the injection port 10a of the nozzle locator 10, and is injected into the manifold unit 4 And is discharged and filled to the cavity side of the injection mold 7 through the nozzle unit 5 and the cylinder unit 6 while flowing along the flow path 22 formed thereby to mass-produce the molded product.

The manifold unit 4 includes an upper manifold block 20 having a gate 20a formed thereon for the purpose of facilitating cleaning and cleaning, And a lower manifold block 21.

The upper manifold block 20 and the lower manifold block 21 are configured to be mutually fastened through, for example, bolts as normal fastening means, The locator 10 can be screwed.

Therefore, according to the embodiment of the present invention, since the manifold unit 4 is configured as a separable type and can be assembled easily, it is easy to repair and is effective in terms of maintenance.

The manifold unit 4 according to an embodiment of the present invention includes a lower manifold block 21 and a lower manifold block 21 so as to prevent leakage of liquid thermosetting resin between the upper manifold block 20 and the lower manifold block 21. [ 22 may be interposed between them. A cylindrical positioning pin 24 may be disposed on both sides of the first O-ring 23 as a reference, and may be interposed between the upper manifold block 20 and the lower manifold block 21.

Therefore, according to the embodiment of the present invention, the reliability of the manifold unit 4 is improved by preventing leakage of the liquid thermosetting resin through the first O-ring 23, The folding unit 4 can be accurately assembled.

The manifold unit 4 according to an embodiment of the present invention includes a pin guide bush module 20 mounted on the upper manifold block 20 and configured between the upper manifold block 20 and the cylinder unit 6, (30).

The pin guide bushing module 30 is formed between the upper manifold block 20 and the cylinder unit 6 for the purpose of preventing backflow of the liquid thermosetting resin in consideration of the characteristics of a liquid thermosetting resin having a low viscosity .

The pin guide bushing module 30 is formed in a cylindrical shape so as to penetrate the valve pin 61 of the cylinder unit 6 and includes a pin guide 31 for guiding the lift of the valve pin 61, A cylindrical pin guide bush 32 screwed into an upper portion of the upper manifold block 20 so as to surround the outer surface of the upper manifold block 20 and a pin guide 31 and an upper manifold block And a backflow prevention bushing 33 interposed between the backflow preventing bushes 20.

Here, the pin guide 31 and the pin guide bush 32 may be provided with a pin guide 31 (relative to the inner diameter of the pin guide bush 32) The diameter of the upper end portion of each of the first and second plates is reduced. An anti-reverse o-ring 36 may be provided on the outside of the bushing 33 for preventing backflow, and may be interposed between the upstream manifold block 20 and the upstream manifold block 20.

The pin guide bushing module 30 is embedded in the upper portion of the backflow preventing bushing 33 and interposed between the pin guide 31 and the backflow preventing bushing 33 to prevent the backflow of the liquid thermosetting resin. And a second backflow preventing ring 35 embedded in the lower portion of the backflow preventing bushing 33 and interposed between the backflow preventing bushing 33 and the upper manifold block 20. [

Therefore, according to the embodiment of the present invention, the first and second backflow preventing rings 34 and 35, which are embedded in the upper and lower portions of the backflow preventing bush 33, It is possible to prevent the reverse flow due to the characteristics of the cold runner block system and to secure the stability of the backflow prevention bushing 33 through the pin guide 31 and the pin guide bush 32, effective.

The backflow preventing bushing 33 and the first and second backflow preventing rings 34 and 35 are formed of a U cup bushing and a U cup ring generally referred to in the technical field Interpretable.

4 to 5, the cold runner block system according to an embodiment of the present invention includes a holding plate 2 in which a manifold unit 4 is disposed at an upper portion and in which a nozzle unit 5 is embedded, A manifold unit 4 is disposed at a lower portion and a clamping plate 1 in which the cylinder unit 6 is embedded and a space plate 3 which is interposed between the clamping plate 1 and the holding plate 2 ).

For example, the cold runner block system can be configured in such a manner that the manifold unit 4 is disposed between the upper clamping plate 1 and the lower holding plate 2 in the drawing, The space plate 3 is interposed between the plates 2 and supported.

A first groove 2a is formed on the upper surface of the holding plate 2 and a second groove 21a is formed on a lower surface of the lower manifold block 4 to correspond to the first groove 2a. 2a and 21a of the manifold unit 4 by inserting the dowel pin 25 into the manifold unit 4a.

The dowel pin 25 is a component used to set the assembly position of the manifold unit 4 and the nozzle unit 5 with respect to the holding plate 2, 2a and the upper portion is inserted into the second groove 21a of the lower manifold unit 4 so that the assembling position of the lower manifold block 21 and the nozzle unit 5 can be easily set .

A first heating plate 40 having a heater 40a embedded therein may be formed under the holding plate 2 for the purpose of easily promoting a curing time. An insulating plate 41 may be interposed between the holding plate 2 and the first heating plate 40 so as to block heat transfer. A second heating plate 42 may be installed on the upper portion of the injection mold 7 so as to face the first heating plate 40.

Therefore, according to the embodiment of the present invention, the curing time can be accelerated through the first heating plate 40 to effectively shorten the cycle time, and unnecessary heat transmission can be prevented through the heat insulating plate 41 to prevent heat loss , Which is effective in terms of thermal efficiency.

1, 4 to 9, the cold runner block system according to the embodiment of the present invention is characterized in that the manifold unit 4 includes a nozzle for discharging a liquid thermosetting resin flowing in the flow path 22, And a cylinder unit 6 formed on the manifold unit 4 and discharging the liquid thermosetting resin to the cavity side of the injection mold 7 through the valve pin 61. [

The nozzle unit 5 is disposed below the lower manifold block 21 and receives a liquid thermosetting resin flowing along the flow path 22 and discharges the resin through a tip portion 50a formed at a lower end portion in the drawing, A nozzle body 50 having a cooling line 51 wound thereon and a nozzle flange integrally formed on the nozzle body 50 so as to eliminate cumulative tolerance and having an upper surface to be in contact with the lower manifold block 21 52, and a nozzle housing 53 installed outside the nozzle body 50 to enclose the nozzle body 50.

The nozzle unit 5 includes a nozzle cover 54 disposed inside the upper portion of the nozzle flange 52 and interposed between the nozzle flange 52 and the lower manifold block 21, The nozzle body 50 can be elastically supported by the nozzle flange 52 and the tip portion 50a can be brought into contact with the injection mold 7 to prevent the gap Gap from being generated therebetween, And includes an elastic body 55 provided for the purpose of preventing the tip portion 50a from being damaged due to oversizing of the nozzle body 50 and being implemented as a disc spring.

The nozzle body 50 is embedded in the holding plate 2 and connected to the flow path 22 of the manifold unit 4 so that the liquid thermosetting resin injected from the flow path 22 is supplied and discharged. The nozzle flange 51 is integrally formed with the nozzle body 50 and is interposed between the holding plate 2 and the manifold unit 4 to fix the nozzle body 50.

The nozzle body 50 and the nozzle flange 51 are formed in a cylindrical shape so that the valve pin 6a of the cylinder unit 6 disposed on the upper portion of the nozzle unit 5 can penetrate the inside thereof.

The nozzle unit 5 including the nozzle body 50 and the nozzle flange 52 and the nozzle housing 53 is provided with a nozzle body 53 for the purpose of preventing the leakage of the cooling water supplied through the helical cooling line 51, A second O-ring 56 is interposed between the lower end of the nozzle housing 53 and the nozzle housing 53 and a third O-ring 57 is interposed between the nozzle housing 53 and the holding plate 2, 2 and the nozzle flange.

The spiral cooling line 51 surrounding the periphery of the nozzle body 50 is cooled by the nozzle body 50 through the holding plate 2 in consideration of the characteristics of the liquid thermosetting resin which hardens when the temperature rises. A cooling passage 50b is formed in a spiral shape on the nozzle body 50 and a gun drill line is formed on the holding plate 2 to communicate the cooling passage 50b with the outside A passage 2b is formed.

In addition, the helical cooling line 51 can be applied to the nozzle body 50 in two stages to increase the cooling efficiency. That is, the first cooling line 51a is formed from the tip portion 50a formed at the lower end of the nozzle body 50 to the middle portion of the nozzle body 50. The first cooling line 51a extends from the end of the first cooling line 51a, And the second cooling line 51b is formed at the upper end of the second cooling line 50. [

In this case, the second cooling line 51b may have a relatively larger pitch than the first cooling line 51a. In other words, the second cooling line 51b may have a relatively larger pitch than the first cooling line 51b. 51a may be formed to have a relatively narrow pitch. The heat insulating plate 41 and the first heating plate 40 may be disposed outside the nozzle body 50 corresponding to the first cooling line 51a.

Therefore, according to the embodiment of the present invention, the cumulative tolerance is removed through the nozzle body 50 and the integral nozzle flange 52 to facilitate maintenance, and the second, third and fourth O-rings 56, 57 and 58 The leakage of the cooling water can be prevented and the reliability can be improved.

Further, it is possible to prevent the tip portion 50a from being damaged and to perform interview sealing through the elastic body 55, and to improve the cooling efficiency through the spiral cooling line 51 composed of two stages so that the liquid thermosetting resin is injected into the injection mold 7, As shown in FIG.

The cylinder unit 6 according to an embodiment of the present invention is formed on the upper manifold block 20 and includes a valve pin 61 for discharging the liquid thermosetting resin to the cavity side of the injection mold 7 And a cylinder 60 installed to be movable up and down.

The cylinder 60 moves the valve pin 61 up and down through the cylinder module 60a formed therein to discharge the liquid thermosetting resin supplied to the nozzle unit 5 to the cavity side of the injection mold 7. [

In view of the characteristics of the liquid thermosetting resin sensitive to various conditions, the cylinder unit 6 needs to adjust the balance of the sequence, for example, during the injection process. Therefore, the stroke of the cylinder 60, which controls the stroke of the cylinder 60, The limiter 63 and the stroke limiter 63 may be embedded in the center of the cylinder cover 62. [

That is, the cylinder cover 62 is installed on the upper portion of the cylinder 60, and the stroke limiter 63 embedded in the center of the cylinder cover 62 is rotated according to the weight or size of the product, For example, the stroke can be controlled for every 1/4 wheel of the stroke limiter 63. [0064]

The rotation of the stroke limiter 63 is adjusted by referring to the graduation line 64 for position indication, and the stroke limiter 63 is fixed to the stop nut Nut.

Therefore, according to the embodiment of the present invention, stroke control of the cylinder 60 through the stroke limiter 63 is effective in improving the operational reliability of the cylinder unit 6. [

Although the present invention has been described in detail with reference to the embodiments thereof, it is to be understood that the present invention is not limited to the cold runner block system according to the present invention. It is to be understood that the terms "comprises", "comprising", or "having", etc., as used herein, mean that a component can be implanted unless specifically stated to the contrary, And all terms including technical and scientific terms are to be understood as being understood to be generally understood by those skilled in the art to which the invention belongs, Have the same meaning.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1 - Clamping plate 2 - Holding plate
2a - first groove 2b - passage
3 - Space plate 4 - Manifold unit
5 - Nozzle unit 6 - Cylinder unit
7 - Injection mold 10 - Nozzle locator
10a - Inlet 11 - Locate ring
20 - upper manifold block 20a - gate
21 - Lower manifold block 21a - Second groove
22 - Euro 23 - 1st O ring
24 - Positioning pin 25 - Dowel pin
30 - Pin guide bushing module 31 - Pin guide
32 - Pin guide bush 33 - Back flow prevention bushing
34 - first backflow prevention ring 35 - second backflow prevention ring
36 - O-ring for preventing backflow 40 - First heating plate
40a - Heater 41 - Insulating plate
42 - second heating plate 50 - nozzle body
50a - Tip portion 50b - Cooling passage
51 - Spiral cooling line 51a - First cooling line
51b - second cooling line 52 - nozzle flange
53 - Nozzle housing 54 - Nozzle cover
55 - Elastomer 56 - Second O-ring
57 - Third O-ring 58 - Fourth O-ring
60 - Cylinder 60a - Cylinder module
61 - Valve pin 62 - Cylinder cover
63 - Stroke limiter 64 - Scaled line

Claims (8)

A manifold unit including a gate into which a liquid thermosetting resin is injected, a flow path through which a liquid thermosetting resin injected through the gate flows, an upper manifold block that shares the flow path, and a lower manifold block;
A nozzle body formed at a lower portion of the manifold unit and discharging a liquid thermosetting resin flowing along the flow path through a tip portion and having a spiral cooling line around the nozzle body; a nozzle body integrally formed on the nozzle body and connected to the lower manifold block A nozzle housing including a nozzle flange, a nozzle housing configured to surround the nozzle body, a nozzle cover configured between the nozzle flange and the lower manifold block, and an elastic body formed between the nozzle cover and the nozzle flange to elastically support the nozzle body. unit; And
A cylinder unit which is provided on the manifold unit and includes a cylinder in which a valve pin for discharging a liquid thermosetting resin to the cavity side of the injection mold is provided so as to be able to move up and down;
/ RTI >
The manifold unit comprising: a pin guide bushing module configured between an upper manifold block and a cylinder unit;
Further comprising:
The pin guide bushing module includes a pin guide for guiding the valve pin up and down;
A pin guide bush provided on the outside of the pin guide;
A reverse flow prevention bushing formed at the lower portion of the pin guide and embedded in the upper manifold block;
A first backflow preventing ring formed on the bushing for preventing backflow and preventing backflow of the liquid thermosetting resin; And
A second backflow preventing ring formed at a lower portion of the backflow preventing bushing;
And a cold runner block system.
The method according to claim 1,
The manifold unit includes a first O-ring formed between the upper manifold block and the lower manifold block and surrounding the flow path; And
A positioning pin formed between the upper manifold block and the lower manifold block to determine an assembling position thereof;
And a cold runner block system.
delete A manifold unit including a gate into which a liquid thermosetting resin is injected, a flow path through which a liquid thermosetting resin injected through the gate flows, an upper manifold block that shares the flow path, and a lower manifold block;
A nozzle body formed at a lower portion of the manifold unit and discharging a liquid thermosetting resin flowing along the flow path through a tip portion and having a spiral cooling line around the nozzle body; a nozzle body integrally formed on the nozzle body and connected to the lower manifold block A nozzle housing including a nozzle flange, a nozzle housing configured to surround the nozzle body, a nozzle cover configured between the nozzle flange and the lower manifold block, and an elastic body formed between the nozzle cover and the nozzle flange to elastically support the nozzle body. unit; And
A cylinder unit which is provided on the manifold unit and includes a cylinder in which a valve pin for discharging a liquid thermosetting resin to the cavity side of the injection mold is provided so as to be able to move up and down;
/ RTI >
A holding plate on which the manifold unit is formed and on which a nozzle unit is installed;
A dowel pin configured between the holding plate and the manifold unit to determine an assembling position of the manifold unit;
A clamping plate in which the manifold unit is formed at a lower portion and in which a cylinder unit is installed; And
A space plate formed between the clamping plate and the holding plate;
And a cold runner block system.
The method of claim 4,
A first heating plate formed at a lower portion of the holding plate and having a heater embedded therein; And
An insulating plate configured between the holding plate and the first heating plate so as to block heat transfer of the first heating plate;
And a cold runner block system.
The method of claim 4,
The nozzle unit includes a second O-ring formed between the lower end of the nozzle body and the nozzle housing to prevent leakage of the cooling water, a third O-ring formed between the nozzle housing and the holding plate, and a fourth O-ring formed between the holding plate and the nozzle flange. O-ring;
And a cold runner block system.
The method according to claim 1 or 4,
Wherein the helical cooling line includes a first cooling line formed at a lower end portion of the nozzle body and a second cooling line formed at an upper end of the nozzle body from an end of the first cooling line and having a relatively larger pitch than the first cooling line, Runner block system.
The method according to claim 1 or 4,
Wherein the cylinder unit comprises a cylinder cover formed on an upper portion of the cylinder; And
A stroke limiter provided at the center of the cylinder cover for controlling the stroke of the cylinder;
And a cold runner block system.

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